# 3887340 Thermostat Kit | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta thermostat kit from the Cooling System group, weighing 0.070 kg and listed for 9 applications on D series engines. It is the kit version, supplied with its sealing parts, while the separate thermostat 3887403 is a heavier single item listed for 20 applications.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D2-40
-   Volvo Penta D2-40B
-   Volvo Penta D2-40F
-   Volvo Penta D1-13
-   Volvo Penta D1-13B
-   Volvo Penta D1-13F
-   Volvo Penta D1-20
-   Volvo Penta D1-20B
-   Volvo Penta D1-20F

-   **Engine Family:** D
-   **HP Range:** 13-40 HP

## ⚙️ Key Features

-   Thermostat supplied as a kit
-   0.070 kg
-   9 applications on D series engines
-   Distinct from the single thermostat 3887403

## 🔌 Function

Holds coolant in the engine until it reaches temperature, then opens to let it pass through to the cooler.

## ⚠️ Common Signs of Failure

-   Slow warm up, or a gauge that never reaches normal
-   Overheating soon after start up
-   Temperature swinging up and down
-   Thermostat stuck open or shut when tested in hot water
-   Scale, corrosion or a perished seal on the unit

## 🛠️ Service Notes

-   Check whether the job needs this kit or the separate thermostat 3887403
-   Fit new seals, refill slowly and bleed the system properly afterwards

## 📦 Condition

-   Genuine Volvo Penta part
-   Brand new
-   Supplied in original or equivalent packaging

## Details

- **Price:** 157.73 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 157.73 AUD | In stock |

## Images

- 3887340 Thermostat Kit | Genuine Volvo Penta Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3887340-thermostat-kit-genuine-volvo-penta)
> Updated: 2026-08-22